I'm not sure which term I should use to generally refer to a person whose job involves handling hazardous material.
Operator first comes to mind, but I'm not sure if it works in certain contexts, to indicate a regular employee who handles such material as part of their regular work routine.
Specifically, does the phrase hazardous waste operator clearly indicate such person, or operator may be understood in a more general sense of a company that deals with hazardous waste disposal?
Also, could the term attendant generally be used as a synonym to operator/handler, as for example in a gas station context: gas station operator/attendant?